Camera



Dec. 18, 1945. B. F. TERRY 2,391,044

CAMERA Filed lay 4, 1944 2 Sheets-Sheet 1 /l/ ATTORNEYS Patented Dec. 18, 1945 UNITED STATES PATENT oFFzcE 1l Claims.

This invention relates to improvements in cameras, and has for an object the provision of a camera adapted to photograph both sides of sheets of material, carrying matter to be copied, on both sides of a member carrying a photographic emulsion on each face thereof.

Another object of the invention is the provision in a camera, of a mirror carriage carrying mirrors angularly disposed to each other with a lens therebetween, means for moving said carriage and the mirrors mounted thereon with respect to a sheet to be copied and a sheet or web carrying a photographic emulsion, said means including means for moving the lens with respect to said mirrors.

A further object of the invention is the provision in a camera, of a station for sheets or the like bearing material to be copied and a station for a double-faced emulsion-bearing sheet, said stations being in alignment with each other, duplicate mirror carriages having their axes parallel to the aligned stations and each carrying mirrors angularly-disposed with respect to its longitudinal axis, one mirror on each carriage being adapted to reect the image of matter in said ilrst station toward a cooperative second mirror, and each second mirror also being anglllarly disposed with respect to said second station,

a lens on each carriage positioned between the mirrors thereon and movable therebetween, and means for moving said mirror carriages toward or away from said stations in parallelism therewith, and means for moving each lens toward one of its cooperative mirrors for reproducing enlarged images, and toward its other cooperative mirror for reproducing reduced images.

Yet another object of the invention is the provision in a camera of a base having a pair of mirror-carrying -carriages mounted thereon, a

. copy station intermediate said carriages and in alignment with the mirrors on adjacent ends of said carriages, a station for supporting the sensitive emulsion in axial alignment with said first station and lying within the ilelds of the mirrors on the opposite ends of'said carriages, a lens on each carriage and having its axis parallel to its carriage and cutting the mirrors thereon, and means for conjointly moving said mirror carriages along said base and for m'oving said lenses thereon between said mirrors.

A further object of the invention is the provision in a camera, as herein described, of lenses and mirror carriages which may be moved independently of each other, thereby permitting enlargements and/or reductions to be made in either side without any interference from the other side.

In order to illustrate Ithe invention, one embodiment of the device is herein described and illustrated in the accompanying drawings in which:

, Fig. 1 is an end elevation of a camera embodying my improvements;

Fig. 2 is a plan view of the new and improved camera having portions broken away for the sake of clarity;

Fig. 3 is a view similar to Fig. 2, except taken from below, and showing details lof the base of the camera;

Fig. 4 is a side elevation as seen from the right hand side of Fig. 2 showing details of documentfeeding belts for moving the documents into the field of the camera, certain parts and supports having been omitted for the sake of clarity.

Referring iirst to Figs, 1 and 2, the camera has a main base III having longitudinal and parallel ytongues II, l2, I3, and I4. These tongues are preferably formed integral with the base I0 and they are engaged by and cooperate with corresponding grooves I5, I 6, Il, and I8 formed in lugs I9, 2li, 2l and 22, respectively. The lugs I9 to 22 inclusive are preferably formed integral with a plate 23, which forms a mirror carriage, and there are on each mirror carriage a pair of lugs i9 in spaced relation to each other, a pair of lugs 20 in a spaced relation to each other, a. pair ofllugs 2| in spaced relation to each other, and a pair of lugs 22 in spaced relation to each other.

The second mirror carriage 24 is similar to the mirror carriage 23 and it is also provided with pair of lugs I-S, 2U, 2I, and 22 having grooves therein which respectively engage the tongues I I, I2, I3, and I4. A longitudinal plate 25 secured to the base I0 by means of screws 26 maintains the tongue II in cooperative relation with the grooves I5 in the severaldownwardly-depending lugs I9. An angle plate 2l secured to the frame I0 by screws 28 engages the severallugs 20 and maintains the proper relation between the tongue I2 and the grooves I6 in the several lugs 20. A similar angular plate 29 secured to the base l0 by screws 30 maintains engagement of the several grooves Il with the tongue I3 and another angular plate 3l secured to the base I0 by screws 32 engages the lugs 22 and maintains the several grooves I8 in engagement with the tongue I4. 'I'he tongues II, I2, I3, and I4 may be considered as constituting ways along which the mirror carriages 23 and 24 may be freely and yet accurately moved, because the strip 25 and i the several angular strips 21, 29, and 3| may be adjusted to a point where substantially all lost motion is taken out.

The mirror carriage 23 carries a frame 33 having mounting lugs 34 and 35 secured to the carriage by means of screws 36. The frame 33 is positioned on the right end of the mirror carriage 23 as seen in Fig. 2. Mounted in the frame 33 is a surface mirror 31. On the opposite end of the mirror carriage 33 is a similar mirror frame 36 carrying lugs 39 and 46 secured to the mirror carriage by means of screws 36, and mounted in the frame 38 is a surface mirror 4|. The mirror carriage 24 has mounted on the right end thereof a frame 42 by means of lugs 43 and 44 and screws 36. A surface mirror 45 is mounted in the frame 42. At the left end of the mirror carriage 24 is a frame 46 secured thereto by means of lugs, one of which is shown at 41, and screws 36. A surface mirror 48 is mounted in the frame 46. The mirrors 31 and 4| are arranged at 45 angles to the longitudinal axis of the mirror carriage 23, and likewise the mirrors 45 and 48.are arranged at 45 angles with the longitudinal axis of the mirror carriage 24. A longitudinal slot 49 is formed in the mirror carriage 23, and asimilar longitudinal slot 56 is formed in the mirror carriage 24. The purpose of'these longitudinal slots will presenti .be described.

'I'he base 6 has a slot 5| formed therein intermediate the mid portions of the mirror carriages wheel 66 causes the spiral pinion 14 to drive the4 spiral pinion' 16, which is meshed therewith, thereby causing the shaft 55 to rotate.

The mirror carriage carries a boss 11 adjacent to the boss ,59, and a boss 16 on the other` end thereof. which is tied to the boss 66 by means of a web 19. The boss 11 carries a reamed hole which accommodates the shaft 12 above referred to, and the other end of the shaft 12 is ymounted in a reamed hole in the web 19. The boss 18 has 23 and 24, and adjacent to the ends of the mirror 1 carriages carrying mirrors 31 and 45. The base |6 also carries a slot 52 oppositely disposed to and in alignment with the slot 5|. The purpose of the slot 5| is to permit the passage 0f a web or webs carrying the matter to be photographed, and the purpose of the slot 52 is to permit :the passage of a sensitized web upon which opposite faces of the matter to be photographed are impressed. The base I6 has secured thereto, in spaced relation, bearing bosses 53 and 54. T'hese bearing bosses are on the same side of the frame as the slot 52 and' one bearing is positioned adjacent to the end of said side, and the other is positioned adjacent to the other end of said side. A shaft 55 is journaled in these bearings and carries a longitudinal key slot 56. A collar 51 is secured to the shaft 55 adjacent to the bearing 54, and a second collar 58 is secured to the shaft adjacent to the bearing 53. `These collars are so set that end play in the shaft 55 is eliminated. The mirrorcarriage 24 carries a bearing boss 59 adjacent to one end thereof and a bearing boss 66 adjacent the other end thereof, and journaled in the bearing boss 59 is a shaft 6|. The shaft 6| has threads 62 formed thereon from a point adjacent the boss 59 to the other end thereof. Mounted on the other end of the shaft 6| over the threads is a threaded bushing 63 having a shoulder 64. A pin 65 passing through the shoulder 64 and the shaft 6| secures the bushing to the shaft. The bushing A63 is journaled in the boss 66. Threadedly secured on the outer end of the shaft 62 is va hand wheel 68 having a handle 61. A taper pin 83 passing through the hub and the shaft 62 keys them together. A collar 68 is secured to the shaft 6| and contacts the end of the bearing boss 59 to prevent end play in the shaft.

A key 89 is carried in the shaft 6| and riding the key is a clutch member 16 having a groove therein engaged by a yoke arm 1|. The yoke arm is secured to a shaft 12 which willprese'ntly be described. A clutch member 13 adapted to a reamed hole therein and carries a stub shaft 86, the outer end of which carries a/knurled knob 8|. The inner end of the stub shaft 86 carries a yoke 82, which is also secured to the shaft 12, so that as the knob 8| is grasped and moved to the left, as seen in Fig. 3, the shaft 12 is moved longitudinally, and thereby the yoke 1| causes the clutch member 16 to slide on the keyway 69 out of engagement with the clutch member 13. with the result that the hand wheel 86 may be rotated without rotating the shaft 55.

The mirror carriage 23 has a bearing boss 84 adjacent the right end thereof, as seen in Figs. 1 and 2, and a bearing boss 85 adjacent the other end thereof. A shaft 86 is threaded from a point adjacent to the Iboss to the right end thereof;

the threads being indicated by the numeral 81. The left end of the shaft 86 is iournaled in the boss 85, and the collar 88 is carried on the shaft in contact with the bearing .boss 85 to eliminate end play. A threaded bushing 89 having a flange 96 is threaded on to the shaft 86 and is journaled in the boss 84. A hand wheel 9| provided with a handle 92 threadedly engages the end of the shaft 86, and a taper pin 93, passing through the hub of the hand wheel and the shaft 86 keys them together. A yoked bracket 94 may be secured to the mirror carriage 23, and between the yoke arms 95 and 95a, is mounted a spiral pinion 96 which carries a key engaging the keyway 56 in the shaft 55, A second spiral pinion 91 is keyed on the shaft 86 and meshes with the pinion 96 so that, as the hand wheel 9| is rotated, the pinion 91 rotated therewith, drives the pinion 96 and, due to the key therein engaging the key- Way 56, the shaft 55 is rotated.

A base 98 mounted on the mirror carriage 23 has a downwardly-depending tongue 99 which forms a working fit in the longitudinal slot 49. Also depending from the base 98 is a boss |66 having a horizontally threaded hole formed therein, the threads of which engage the threads 81. Depending from the lboss 66 is a vertical boss having a step |6| and a smaller step |62. The purpose of the latter step will be presently described. Extending upwardly from the .base 96 is a support |63 upon which is mounted a lens |64. The axis of the lens |64 is parallel to the longitudinal slot 49 and cuts the mirrors 31 and 4| at mid points thereon. A light-excluding Ibellows |65 has one' end thereof connected't'o the lens support |66 (which supports the lens |64). and the other end of this bellows is connected to a frame |61 supported on the mirror carriage adjacent to the right edge of the mirror 4|, as seen in Figs. 1 and 2.

Preferably formed integral with the base I l is a curved web |08 suitably braced by radial webs |09 and ||0 and a straight web Formed in the web |08 is a curved slot ||2.

This slot is in the form of a quadratic curve 5 Where f equals equivalent focus of lens, linear magnication equals M Image size Object size X 'being the distance the lens moves from median plane, and Y the-distance of movement of the mirror carriage with respect to the image and object. In Y an arbitrary constant may be added to represent arbitrary arrangement of apparatus.

The step |02 of the -boss |0| forms a working fit with the walls o'f the slot H2. Normally this boss is positioned midway between the extremi-4 ties of the curved slot when the lens |04 is half way between the mirrors 31 and 4| and these mirrors are nearest to the object and the image, which will respectively pass through the slots 5| and 52, as will be presently described.

Now, viewing Figs. 1 and 2, it will be noted that as the hand wheel 9| is rotated in a clockwise direction (as viewed from the front end of the wheel), the lens |04 will be moved to the right. When the lens |04 first starts to move, there will be practically no movement of the carriage, but as the movement of the lens |04 is continued to the right, the mirror carriage 23 begins to move away from its position nearest the object and the image, and when a point 'is reached where the lens has moved its maximum distance to the right, the carriage 23 has, by that time, moved its maximum distance from the image and the object. This would be the position for greatest enlargement of the image being recorded.

If instead of turning the hand wheel clockwise, it were turned counter-clockwise, the lens |04 would be moved to the left, as viewed in Figs. l and 2 (away from the mirror 31 and towards the mirror 4|), and by the time the lens is moved its greatest distance toward the mirror 4|, the mirror carriage, due to the engagement oi' the boss |02 with the slot ||2, is again moved its greatest distance away from the object and the image. And since the distance between the lens and the object is now the greatest, this would be the position for the greatest reduction of the image.

A base ||2a mounted on the mirror carriage 24 has a downwardly-depending tongue ||3 which forms a working iit in the longitudinal slot 50. Also depending from the base 99 is a boss similar to the boss and having a horizontally-threaded hole therethrough, the threads of which engage the threads 62. Depending from this boss is a vertical boss having a step ||4 (which is similar to the step |02 above described).

Extending upwardly from the base 2a is a support ||5 upon which is mounted a lens ||6. The axis of the lens ||6 is parallel to the longitudinal slot 50 and cuts the mirrors 45 and 48 at mid points thereon. A light-excluding bellows I|1 has one end thereof connected to the lens holder ||5 (which supports the lens ||6) and the other end of this bellows is connected to a frame H9 supported on the mirror carriage adjacent gol tle right edge of the mirror 48, as seen in Preferably formed integral with the base i0 is a curved web |20 suitably braced by radial webs I2| and |22, and a straight web |23. Formed in the web |23 is a curved slot |24 like the slot ||2, above described. The slot |24 is also in the form of a quadratic curve. The boss ||4 forms a working t with the walls of the slot |24 and is normally positioned midway between the extremities of the slot |24 when the lens ||6 is half way between the mirrors 45 and 48 when these mirrors are nearest the object and the image. When the lens I8 has been moved to the right, as viewed in Fig. 2, to its position nearest the mirror 45 and where the distance from the object to the lens is at a minimum, the greatest magnification will be produced and, on the other hand, when the lens 6 is closest to the mirror 48, the greatest reduction is effected.

When the clutch members 10 and 13 are engaged, the act of rotating either the hand wheel 66 or the hand wheel 9| will move both lenses longitudinally on the mirror carriages in unison, and the movement of the mirror carriages is also in unison. Now, if it is desired to move each lens independently of the other (for example in cases where different magnications are wanted), the knob 8| is pulled outwardly to disengage the clutch members and then each lens, together with the mirror carriage can be moved independently of the other.

A bellows |05 has one end thereof secured to a frame |26 carried on the mirror carriage 23, and

the other end is connected to a frame |21 carried on the mirror carriage |24. The bellows |25 is provided for excluding light from the right, edge of the lm or sensitized web passing through the slot 52, as will presently be described. A bracket |28, Fig. 2, is secured to the base I0 and carries holes |29 and |30 which form bearings for roller shafts |3| and |32 respectively. A second bracket |33 secured to the base I0 carries holes |34 and |35 which form bearings for the other ends of the shafts |29 and |30. Other brackets may be provided for other rollers shown in Fig. 4, but these brackets are omitted from Fig. 4 for the sake of clarity. The shafts |3| and |32 respectively carry rollers |38 and |31. In vertical alignment with the rollers |36 and |31,are rollers |38 and |39 provided respectively with shafts |40 and |4|. Spaced apart from and in horizontal alignment with the roller |36 is a roller |42 having a shaft |43. Riding on the shaft |43 is a bracket |44 carrying a tightening roller |45 on a. stud shaft |46. A spring |41 has one end connected to a stud |48 on the base I0, and the other end is connected to a hole |49 formed in the bracket |44. Horizontally-spaced apart from the roller |38 and vertically-spaced apart from the roller |42 is a roller |50 having a shaft 5|. A transparent belt |52 spans the rollers |36, |38, |50 and |42, and is engaged and tightened by the roller |45. The portion of this belt between the rollers |36 and |38, designated by the numeral |52a, Ipasses through the slot 5I and is substantially vertical.

Horizontally-spaced from the roller |31 is a roller |53 carried on a shaft |54. Riding the shaft |54 is a bracket |55 which carries a roller |56 on a stud shaft |51. A spring |58 has one end connected to a stud |59 on the frame l0 and the other end is connected to a hole |60 formed in the bracket |65. Spaced apart horizontally of the other rollers rotate. The rollers may bemotor-driven or may be rotated by hand. In

Fig. 4 is shown a crank arm |84 which is secured to the shaft l5| andv is provided with a' handle |85. When this handle is rotated in a counterclockwise direction, the belt |52 moves to the left (in the direction of the arrow), and the belt |83 moves to the right (in the direction of its arrow). A suitable feed shelf |88 may be provided over which copy |61 may be fed into the space between the belt portions |52a and |63a. The copy then moves into the field of the camera and after exposure may be discharged upon a surface |68 to receive the same.

For illuminating the side of the copy-vfacing the mirror 31, a tubular'lamp |68 provided with a reflector is positioned forwardly of and to one side of the copy station, and the second tubular lamp |1| provided with a reflector |12 is positioned forwardly of and to the right of the copy station. For illuminating the side of the copy facing the mirror 45, a tubular lamp '|13 provided with a reflector |14 is positioned to the left of the copy station and the tubular lamp |15 with a reflector |18 is positioned to the right of thev copy station.

vA strip or web |11 carrying a light-sensitive emulsion in both faces thereof passes through the slot 52 in the base I0 and is held flat in the focal plane of the lenses bymeans of a vertical frame |18 having a transparent opening |18 formed therein, and a second vertical framwl 80 having a transparent opening |8| formed therein. The frame |18 may have an angular flange |82 at the bottom thereof secured to the base I0 by means of screws |88. a flanged portion |84 at the bottom thereof',l and is provided with Iparallel slots |85 and |88 which, respectively, engage bosses |81 and |88 on the base |0. Ihe flanged .portion |84 also has a rectangular hole |88 formed therein and a cam |80 carried on a shaft |8| engages one face of the opening |88 for propelling the frame |80 away from the frame |18. A plurality of studs |82 form working fits in bosses |83 and between the bosses |88 and the frame |80 aresprings |84 for urging the frame |80 toward the frame |18. The sensitized strip |11 is positioned between the graphing operation), the shaft |8| may be rotated to cause the cam 80 to move the frame |80 away from the frame |18 (against the urge of the springs |84) so that the strip may be fed lto anew position without scraping the same. i f Instead of using a web or strip, sheets of mate- Although I have herein shown and described my improved camera, and have described manual control of a number of features thereof, it is obvif ous that many changes may be made in thelfarl rangements shown and described without departing from the scope of *the invention, and many of the/manual controls may be effected in otherways than those specifically described. Y

What is claimed is: Y

1. In a camera, a base forming sion, a station for vertically supporting matter to be photographed, said stations being spaced apart from and substantially in alignment with each other on said base, a carriage substantially" parallel to said stations and movable along said base from a normal position nearest said stations toward ,one end of said base, a longitudinal guide v the same along said guid slot, a mirror posiltioned on one end of said carriage angular with away from said stations when said lens support 'I'he frame |80 has yframe |18 to a new position (after each photo- 'is moved toward said second mentioned mirror for producing enlarged images of said matter on said emulsion. Y

2. In a camera, a base forming a support, a station for vertically supporting a sensitized emulsion, a station for vertically supporting matter to be photographed, said stations being spaced apart from and substantially in alignment with each other on said base, a carriage substantially parallel to said stations and movable along said base from a normal position nearest said stations toward one end of said base, a longitudinal 'guide slot formed in said carriage, a lens support mounted on said carriage and engaging said guide slot,

a lens mounted on said lens support, means operatively connected to said lens support vfor moving the same along said guide slot, a mirror positioned on one end of said carriage yangular with respect to both said guide slot and said first station, av

second mirror -positioned on the opposite end of said carriage angular with respect to both said guide slot and said second station, whereby an image of matter in said second station is reflected by said second mirror and via said lens to said first mirror and thence to said sensitized surface in said first station, and means cooperating with said lens support for causing said carriage to move away from said stations when said lens support is moved toward said first mentioned mirror for parallel to said stations and movable along said base from a normal position nearest said stations toward one end of said base, s. longitudinal guide y slot formed in said carriage, a lens support mounted on said carriage and engaging said guide slot, a lens mounted on said lens support, means opera- Y a support, a station for vertically supporting a sensitized emultively connected to said lens support for moving the same along said guide slot, a mirror positioned on one end of said carriage angular with respect to both said guide slot and said iirst station, a second mirror positioned on the opposite end o! said carriage angular with respect to both said guide slot and said second station, whereby an image of matter in said second station is reected by said second mirror and via said lens to said first mirror and thence to said sensitized surface in said first station, and curved slot means formed in saidbase and engaging said lens support for causing said carriage to move away from said stations from its normal position adjacent said stations when said lens support is moved either towards the first mentioned mirror to produce a reduced image of said matter, or when said lens support is moved towards the second mentioned mirror for producing an enlarged image of said matter of said emulsion.

4. In a camera, a base fonming a support,a station for vertically supporting a sensitized emulsion, a station for vertically supporting matter to be photographed, said stations being spaced apart from and substantially in alignment with each other on said base, a carriage substantially par- ,allel to said stations and movable along said base from a normal position nearest said stations toward one end of said base, a longitudinal guide slot formed in `said carriage, a lens support mounted on said carriage and engaging said guide slot, a lens mounted on said carriage and engaging said guide slot, a lens mounted on said lens support, a curved slot on said base and having its apex extending ,toward a line joining said stations, an extension on said lens support en-gaging and forming a working fit in said curved slot, and means operatively connected to said lens support for moving it along said guide slot between said mirrors 'whereby the movement of said lens support in either direction along said carriage from its normal position causes said carriage to move along said base in a direction away from said stations.

5. The invention according to claim 4 in which said curved slot is a quadratic curve in which X=1/2f( M- and Y=1/2f(M+ All) f being the equivalent focus of said lens, the llinear magnification M equalling'the Image size Object size a mirror carriage carried on ways on said base and partly carried on said base for causing said mirror carriages to move relative to said stations in definite relation to the movement of said lens supports along said carriages.

7. In a camera for photographing matter on opposite sensitized surfaces, a base, a station on said base for supporting said surfaces vertically, a second station on said base spaced apart from and substantially in alignment with said first station for vertically supporting matter to be photographed, a series of ways on said base substantial- 1y' at right angles to said stations, a mirror carriage on said ways, between said stations and one end of said base, a vertical mirror mounted on one end of said carriage angular with respect to the axis of the carriage and in alignment with one of said stations, a second vertical mirror mounted on the opposite end of said carriage angular with respect to the axis of the carriage and in alignment with the other of said stations, a guide slot formed in said carriage parallel to the axis thereof, a lens support movable'along said guide slot, a lens in said support, means on said carriage for movin-g said lens support along said slot, means partly on said lens support and partly on rsaid base for causing said carriage to move along said base parallel to said stations as said lens support is moved along said slot, a second carriage mounted on said base between said stations and the opposite end thereof, said second carriage being a duplicate of said first carriage and also including Imeans partly on its lens support and said base for moving it along the base in the same manner aforesaid, and means for causing both said carriages to move in opposite directions along said ways.

8. In a camera for simultaneously photographing matter on opposite surfaces of a sensitized sheet, a base forming a support, a station for vertically supporting two oppositely facing sensitized emulsions, a station for vertically supporting carriers :bearing matter on both surfaces thereof to be photographed, said stations being spaced apart from and substantially in alignment with each other on said base, a pair of carriages mounted on said base, one carriage being positioned to one side of saidstations and the other carriage being positioned on the opposite side of said stations, a lens support longitudinally movable on the other of said carriages both of said lens supports carrying lenses, a set of mirrors positioned on said and positioned to one side of said stations, a second mirror carriage positioned on said base on Ways to .the other side of said stations, mirrors at each end of each of said carriages angular with respect to said stations, a lens and a support therefor on each of said carriages movable along axes cutting the respective mirrors on each of said carriages, means on each carriage for moving its lens support with respect to the mirrors thereon, and means partly carried on said lens supports first carriage including a mirror adapted to reect an image of the matter on one face of said carrier towards its lens and thence via a second mirror to one face of said emulsion, said second mirror carriage also carrying a set of mirrors for directing matter from the opposite face of said carrier via its lens and thence via a second mirror to the opposite sensitized surface, means for moving the lens carrier along on said first carriage and means for moving the lens on said second carriage, and means nonmally linking last two means together foi-causing said lens carriers to move in unison and adapted to be disabled to permit said lens supports to be moved independently of each other.

9. The invention, according to claim '1, in which said means for causing both said carriages to move in opposite directions along said ways, in-

cludes a shaft angular with respect to the axes of said carriages and gearing keyed to said shaft, and operatively connected to said carriages. said gear being adapted to move along said shaft with said carriages.

10. In a camera for photographing matter on opposite sensitized surfaces. a base, a station on said base for supporting said surfaces vertically, a second station on said base spaced apart from and substantially in alignment with said nrst station for vertically supporting matter to be l photographed, a series ot ways on said base substantially at right angles to said stations, a

' mirror carriageI on said ways, between lsaid stations and one end of said base, a vertical mirror mounted `on one end of said carriage angular with respect to the axis of the carriage and in emulsion, a station for vertically supporting matalignment with one of said stations, a second vertical mirror mounted on the Opposite end of said carriage angular with respect to the axis of the carriage and in alignment with the other :fraid stations, a guide slot formed in said c age parallel to the axis thereof, a lens support movable along said guide slot, a lens in said support, means on said carriage for moving said lens support along said slot, means partly on said lens support and partly on said base for causing said carriage to move along said base parallel to said stations as said lens support is moved along said slot, a second carriage mounted on said base between said stations and the opposite end thereof, said second carriage being a duplicate of said first carriage and also including means partly on its lens support and said base for moving it along the base in the same manner aforesaid, and means for causing both said carriages to move in opposite directions along said ways, clutch' means being provided ter to be photographed, said stations being spaced apart from and substantially in alignment with each other on said base, a carriage substantially parallel to said stations and positioned between them and one end of said base, said carriagel being movable along said base from a normal Y position nearest said stations toward said end positioned on each end of said carriage, said mirrors being angularly disposed with respect to the axis of said lens, a threaded shaft journaled on said carriage below the surface thereof and having its threads operatively engaging said threadedghole, and means on said shaft for rotating the same and causing said lens support to move along said guide slot between said mirrors.

BENNETT F. TERRY; 

